import fs from "node:fs/promises";
import os from "node:os";
import path from "node:path";
import { describe, expect, it, vi } from "vitest";

import { createClawdbotTools } from "./clawdbot-tools.js";

vi.mock("./tools/gateway.js", () => ({
  callGatewayTool: vi.fn(async (method: string) => {
    if (method === "config.get") {
      return { hash: "hash-1" };
    }
    return { ok: true };
  }),
}));

describe("gateway tool", () => {
  it("schedules SIGUSR1 restart", async () => {
    vi.useFakeTimers();
    const kill = vi.spyOn(process, "kill").mockImplementation(() => true);
    const previousStateDir = process.env.CLAWDBOT_STATE_DIR;
    const stateDir = await fs.mkdtemp(path.join(os.tmpdir(), "clawdbot-test-"));
    process.env.CLAWDBOT_STATE_DIR = stateDir;

    try {
      const tool = createClawdbotTools({
        config: { commands: { restart: true } },
      }).find((candidate) => candidate.name === "gateway");
      expect(tool).toBeDefined();
      if (!tool) throw new Error("missing gateway tool");

      const result = await tool.execute("call1", {
        action: "restart",
        delayMs: 0,
      });
      expect(result.details).toMatchObject({
        ok: true,
        pid: process.pid,
        signal: "SIGUSR1",
        delayMs: 0,
      });

      const sentinelPath = path.join(stateDir, "restart-sentinel.json");
      const raw = await fs.readFile(sentinelPath, "utf-8");
      const parsed = JSON.parse(raw) as {
        payload?: { kind?: string; doctorHint?: string | null };
      };
      expect(parsed.payload?.kind).toBe("restart");
      expect(parsed.payload?.doctorHint).toBe("Run: clawdbot doctor --non-interactive");

      expect(kill).not.toHaveBeenCalled();
      await vi.runAllTimersAsync();
      expect(kill).toHaveBeenCalledWith(process.pid, "SIGUSR1");
    } finally {
      kill.mockRestore();
      vi.useRealTimers();
      if (previousStateDir === undefined) {
        delete process.env.CLAWDBOT_STATE_DIR;
      } else {
        process.env.CLAWDBOT_STATE_DIR = previousStateDir;
      }
    }
  });

  it("passes config.apply through gateway call", async () => {
    const { callGatewayTool } = await import("./tools/gateway.js");
    const tool = createClawdbotTools({
      agentSessionKey: "agent:main:whatsapp:dm:+15555550123",
    }).find((candidate) => candidate.name === "gateway");
    expect(tool).toBeDefined();
    if (!tool) throw new Error("missing gateway tool");

    const raw = '{\n  agents: { defaults: { workspace: "~/clawd" } }\n}\n';
    await tool.execute("call2", {
      action: "config.apply",
      raw,
    });

    expect(callGatewayTool).toHaveBeenCalledWith("config.get", expect.any(Object), {});
    expect(callGatewayTool).toHaveBeenCalledWith(
      "config.apply",
      expect.any(Object),
      expect.objectContaining({
        raw: raw.trim(),
        baseHash: "hash-1",
        sessionKey: "agent:main:whatsapp:dm:+15555550123",
      }),
    );
  });

  it("passes update.run through gateway call", async () => {
    const { callGatewayTool } = await import("./tools/gateway.js");
    const tool = createClawdbotTools({
      agentSessionKey: "agent:main:whatsapp:dm:+15555550123",
    }).find((candidate) => candidate.name === "gateway");
    expect(tool).toBeDefined();
    if (!tool) throw new Error("missing gateway tool");

    await tool.execute("call3", {
      action: "update.run",
      note: "test update",
    });

    expect(callGatewayTool).toHaveBeenCalledWith(
      "update.run",
      expect.any(Object),
      expect.objectContaining({
        note: "test update",
        sessionKey: "agent:main:whatsapp:dm:+15555550123",
      }),
    );
  });
});
